MESOSCALE DISCUSSION 0446
   NWS STORM PREDICTION CENTER NORMAN OK
   0259 PM CDT THU APR 11 2013
   
   AREAS AFFECTED...MIDDLE TN
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 97...
   
   VALID 111959Z - 112130Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 97
   CONTINUES.
   
   SUMMARY...SVR WX THREAT ACROSS MIDDLE TN CONTINUES. SOME STORM
   STRENGTHENING IS POSSIBLE...PARTICULARLY ACROSS THE SRN PORTION OF
   THE WATCH...AS LOW-LEVEL MOISTURE INCREASES. STRONG WINDS REMAIN THE
   PRIMARY SVR THREAT.
   
   DISCUSSION...CONVECTIVE LINE CONTINUES TO MOVE ACROSS MIDDLE TN.
   THUS FAR STORMS HAVE REMAINED SUB-SEVERE...LIMITED BY WEAKER
   LOW-LEVEL SHEAR AND ONLY MODEST INSTABILITY. LLJ JUST AHEAD OF THE
   LINE OF STORMS IS EXPECTED TO PERSIST WITH A RESULTANT CONTINUATION
   OF MOISTURE ADVECTION NWD IN MIDDLE/ERN TN. DEWPOINT VALUES SHOULD
   REACH THE LOW 60S ACROSS THE SOUTHERN PORTION OF THE WATCH AREA
   SHORTLY AND FARTHER N WITHIN THE NEXT FEW HOURS. AS A
   RESULT...INCREASING INSTABILITY WILL LIKELY SUPPORT MODEST STORM
   STRENGTHENING. STRONG WINDS REMAIN THE PRIMARY SVR THREAT AS POOR
   MID-LEVEL LAPSE RATES LIMIT HAIL PRODUCTION.
   
   ..MOSIER.. 04/11/2013
   
   
   ATTN...WFO...MRX...JKL...LMK...OHX...HUN...
   
   LAT...LON   34978764 36628638 36608439 34988569 34978764